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The ROS_PACKAGE_PATH needs to contain a list of the paths to all the packages. The way you're exporting a path to it you're not chaining onto the original value so you're losing all the other paths.

All of your exports need to have :$ROS_PACKAGE_PATH on the end of them so they are concatenated onto the original value as shown below:

export ROS_PACKAGE_PATH=/home/clyde/ros2/orca_ws/install/orca_base/share:$ROS_PACKAGE_PATH

If you create a new terminal and use this command it should hopefully fix things.

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